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exchange 2003 loses auto reply messages to non domain recipients

Posted on 2009-07-06
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Last Modified: 2012-05-07
When a user in my domain sets an out of the office auto-reply, only domain users get the auto reply. Non-domain users do not get a reply, even-though the email is received. The last code I see in Exchange's log for the auto reply is 1024, message categorized. The only spam filtering for this server, is mxlogic, an external email service like Postini.
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Question by:kdugger
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grandebob earned 2000 total points
ID: 24789827
This is an intended feature. If you allow auto responces to every one on the internet, it makes it easy to determine user account and email address info. For example, every one who sends you spam while on vacation just got a response and now knows your email address is valid.

To enable this feature (or disable this security function) follow these instructions:
http://support.microsoft.com/kb/266166
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